This is such a small sample of the core sample data. The larger data set shows even this period is unusually erratic.

http://www.mahurangi.org.nz/wp/wp-content/uploads/2014/12/Figure-6-v2.jpg

https://youtube.com/playlist?list=PLMYB1WEMkYL3naB74XlAQjDf1J87DBtci

Freemasons are the builders. They've been taking all the resources and building underground bases/cities. They know what's coming and they're preparing for it. They need a new world order to keep it all in check.

That's my theory.